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US 5,145,723 AGranted
Process for coating a substrate with silica
AssigneeDow Corning Corporation
InventorsDavid S. Ballance, Robert C. Camilletti, Theresa E. Gentle
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Abstract
To form a coating of silica on a substrate, the substrate is coated with a silica precursor having a melting point between about 50.degree. and about 450.degree. C. The coating is heated to a temperature above its melting point in an inert environment to allow the coating to melt and flow. The melted coating is then heated in an environment which facilitates conversion to silica for a time sufficient to convert it to silica.
Claims10
A method of forming a silica coating on a substrate comprising:
- forming a coating on a substrate where the coating comprises a silica precursor having a melting point between about 50.degree. and about 450.degree. C.;
- heating the coating to a temperature above the melting point of the silica precursor in an inert environment for a time sufficient to allow the coating to flow;
- and
- after the coating has flowed, exposing the coating to a reactive environment for a time and at a temperature sufficient to convert the coating to silica.
1 more element
Dependencies are inferred from the claim text.